Re: Ktimer / -rt9 (+custom) monotonic_clock going backwards.

[Ingo Molnar]

* Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> > should be monotone - the latest -rt kernels include a debugging check
> > for the monotonicity of do_get_ktime_mono().
> 
> Hi Ingo,
> 
> Hmm, I think this will help in that debugging check :-)

> +	per_cpu(prev_mono_time, cpu) = now;
>  	return now;
>  }

*blush*, applied.

I was already wondering a bit why that check never triggered for anyone.  
It is easy to have a non-monotonic clock (there's lots of crappy hw and 
the gettimeofday code has to work hard) and the effects of time warps 
are subtle, if noticeable at all, so i expected some detections.

i have released -rt13 with another change: the other timer warning is 
only printed once. (a steady stream of messages is not helpful)

	Ingo
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